turning slide valve

例句：

1. 1. The engineer was turning the slide valve to control the flow of oil.
   工程师正在转动滑阀来控制油的流量。
2. 2.The technician adjusted the slide valve to optimize the system performance.
   技术人员调整了滑阀以优化系统性能。
3. 3. During maintenance, the mechanic turned the sliding valve to inspect the seals.
   在维护期间，机械师转动滑阀来检查密封件。